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a. P. MILLER AND 0.1. BREMSER.

BRUSH.

APPLICATION FILED NOV. I2. EN?.

Patented June 3, 1919.`

ROBERT P. MILLER AND CHARLES J. BREMSER, F ST. LOS, MSSOURI; SAID MILLERI ASSIGNOR. T0 SMB BREMSER.

naeaa'aa.

Patented June 3, 19i9.

Application tiled. .'rovember 12, 1917. Serial No. 291,59.

To all whom t mayconoem:

Be it known that weRoBnRfr P. MILLER and CHARLES J. Brin/rena, citizensof the United States, -residingatthe cityY of St. Louis, State ofMissouri, have jointly invented a certain new and useful improve-A mentin Brushes, of which the following is a specification, reference beinghad to the accompanying drawing, forming a part thereof.

This invention relates generally to brushes and, more particularly', toa certain new I simple in its construction, conveniently hanlat indicatelike parts throughout the dled, and eficient in operation, and toimprove generally upon, and simplify the construction of, brushes'ofthekind described. With the above and other objects in View, our inventionresides in certain novel eatures of form, construction, arrangement, andcombination of parts, all as will hereinater be described and afterwardpointed out in the claims.

ln the accompanying drawing,

. Figure 1 is a longitudinal sectional View ofan air or' spray brushembodying our in vention; p p

Fig. 2 is a somewhat similar View with the barrel or casing of the brushomitted;

Fig. 3 is a cross sectional view through the brush on approximately theline 3 3, Fia l;

Fig. 4 is a similar view. onvapproximately the line 4 4, Fig. 1;

Fig. 5 is also a slmilar view on approximately the line 5 5, Fig. 1; and

Fig. 6 is an enlarged detail view, partly in side elevation land partlyin section, of

thenozzle end of the brush.

Referring now more in detally to the said drawing, in which likereference characters several views, v1 indicates the barrel or Casin votl' the bush, which is preferably in the crm of an elongated tube ofsuitable diameter internally threaded at its rear end to receive acentrally apertured end-cap or clo- Sure 2.

Slidably fitting within the rearward part. of barrel or casing 1, is adisk 3 ot suitable thickness, disk 3 being provided with diametrlcallyopposite peripheral recesses accommodating correspondingly arrangedldiametrically opposite longitudinally-extendlng parallel guides 4 4fixed to, and upon the inner surface of, barrel 1, as seen particularlyin Fig. 1. Extending longitudinally of barrel land projecting .laterallyfrom the opposite ,side faces of, and 'pref-V erably integral with, disk3, are alining tubular portions 45 6, disk 3 being formed or providedwith a threaded aperture communicating and approximately in alinementwith said tubular portions 5 6. Also extending longitudinally of. barrell with its outer orrear end slidably projecting exteriorly of saidbarrel through the aperture vin y .end-cap 2, is a stemv orneedle-adjusting rod 7 preferably provi-ded lat its outer endwith a heador button 8, stem or rod 7 fitting at its inner or forward end in saidaperture of, and having threaded engagement with, the disk 3, asillustrated in Fig. 1. Coiled on stem 7 and interposed between disk 3Vand cap 2 with its forward end seated on said tubular portion orextension 5 and itsk rear end seatedon a short tubular extension 9 oncap 2, is a coiled spring 10 for purposes hereinafter appearing.

Extending longitudinally of casing 1 with its rearend sleeved withinsaid tubular eX- tension 6 of the disk 3, 1s a tubular meinb'er orneedle-housing 11 having its forward end fitting withinv a cylindricalor port-member 12 adjustably fitting within` casing 1 and longitudinallyprovided with a bore 13 communicating with, and vpreierably of reduceddiameter relatively to, the here ot member 11.

Sleeved upon tubular member 11 interl' mediate the forward end of saiddisk-extension 6 and the port-member'l2, is a somei what truncate/dcone-shaped or valveaCtu ating member 14 provided or formedwith a collaror annular flange 15 and a short rearwardly rojecting tubular extension16 adapted Ior engagement with the forward end of said disk-extension 6for pur oses hereinafter appearing. Coiled on sai disk-extension 6 andinterposed between disk 3 andy the valve-actuating member 14 with itsforward `end seated preferably upon the extension 16 of member 14, is

1 seen particularly in Fig. 1.

a second coiled spring 17, also for purposes hereinafter appearing.

18 indicates the nozzle of the brush, which is substantially a hollowcone-shaped member having at its apex a flaring outlet or mouth 19 andprovided or formed at its base with a tubular extension 2O of reducedexternal diameter to neatly and conven-` iently fit within the barrel orcasing 1, aS

N ozzle-eXtension 20 is internally threaded to detachably engage with areduced externally threaded extension 21 on the port-member 12. Thethreads of extension 21 are interrupted by a plurality of ports 22extending longitudinally of the member 12 and which communicate at theirforward ends with the chamber of nozzle 18 and at their rear ends with aspace or chamber 23 provided within casing l preferably by externallycutting away or reducing the member 12 intermediate its ends. The spaceor chamber `23,

ports 22, and thechamber of nozzle 18 form" substantially what l mayterm or designate the air-chamber or' the brush. Extendinglongitudinally of the casing 1 and having preferably threaded engagementat its rear end with the reduced extension 21 of member 12, is a tubularmember 24 forming substantially an extension of tubular member 11, thebore of member 2d communicating and being approximately in alinementwith the bore 13 oi member 12. rllhis member 2l is contracted orsomewhat cone-shaped at its forward end, as at 25, and projects normallyat its said end into the mouth 19 of nozzle 18 and partially closes thesame, there being normally, however, a clearance between the outer wallor portion 25 of member and the inner end of said nozzle-mouth 19, sothat the compressed air or other analogous iluid supply furnished tosaid air cham-ber, in escaping therefrom issues as a blast through saidnozzlemouth 19. I

'lhreaded` or otherwise suitably attached to casing or barrel 1, is abored member or valve-housing 26 adapted for connection at its lower endwith an air supply pipe 0r the like 27 leading'to a source of compressedair or other suitable fluid supply, not shown.

The housing 26 is provided with a suitable valve-seat, as at 28, andsuitably mounted within the housing 26 toengage the seat 23 and therebyclose the bore of member 26 to said source of supply, is aspring-pressed valve 29 having a stem 3G projecting up into barrel orcasing 1 in cooperative or actuating position relatively to cone-member1l, as seen particularly in Fig. 1. Communicating above valve 29 withthe bore of housing 26, is a pipe 31 suitably connected by acommunicating elbow 32 with the chamber 23 of the barrel or casing 1.

' Also suitably attached to casing or barmomes in member'12,'that partof the bore of tubu-` lar member 1l forward of the stopper 35, togetherwith the'bores of members 12 and 2l, forming or constituting what we mayterm or designate the paint-chamber of the brush.

Extending longitudinally of the brush and housed within'the members 1l,12, and 24e, as seen particularly in F ig. 2, is an elongated needle orpaintchamber closing member 36 fixed at its rear end to the forward endof stem or rod 7 and normally projecting at its forward or pointed endthrough the mouth 25 of member 24 and into the mouth 19 of nozzle 18.

Suitably fixed preferably interiorly, and projecting exteriorly, of thecasing or barrel 1, as shown particularly in Figy, is a pair of spacedupstanding ears 37, pivotally mounted upon which is a trigger' or brushoperating-member 38. rlhis member 33 is' substantially in the form of abell-crank lever, one leg or member thereof being provided with anger-engaging piece 39 and the other leg or member thereof beingbifurcated or forked to straddle conoidal member 14: and being providedwith lugs or the like l() adapted to engage said flange 15 of the memberle.

ln use or operation, the parts of our brush .are normally in therespective positions closing the air supply.- 0n finger-piece 39 beingdepressed, the bifurcat'ed member of lever 38 will be actuatedrearwardly, whereupon member 1'41 will correspondingly be actuatedrearwardly against the tension of said spring 17. 0n such rearwardmovement of' the member 14, the valve 29, under the engagement of itsstem 30 with the obliqueA or 'beveled tace of member 14, will first beunseated to permit compressed air or other fluid from said source ofsupply to flow into the air-chamber of the brush, such air findingescape as a continuous blast from the brush through the nozzleoutletprovided between the nozzle-member 18 and the paint-chamber member 24.On the continued rearward movement of the member 14, tubular extension16 of member 14 will engage' with the forward end of disk-extension Gand drive the same rearwardly against the tension of spring 10,

movement rearwardly of the disk-extension 6 and its disk 3 carryingtherewith the needle 36 and'thereby opening the nozzleoutlet 25 of thepaint-chamber, whereupon under the continuous blast of air issuing fromthe air-chamber, the paint, pigment or the like supplied to thepaint-chamber of the brush will, under the suction or vacuum produced`by the escaping compressed air, be drawn asa spray from thepaint-chamber', as indicated/in Fig. 6.y On pressure upon saidfinger-piece 39 being removed, somewhat or relatively heavy spring 10will first act to return the needle 36 to its seat, closing the outletof the paint-chamber, the member 14, in turn, being yieldingly returnedto normal position under the tension of spring 17. On member 14returning to such normal position, air-valve 29 again becomes seated,thereby closing off the airsupply. Thus, in the use of the brush, air isfirst permitted to flow through the brush in advance of the opening ofthe paint-chamber and is also permitted to flow through the brushsubsequently to cutting off the paint-supply,

whereby the nozzle-mouth 19 is kept clear of paint or the like andblotches in the work, produced by lumps of paint or the like from thebrush, prevented. The accumulation of paint in the nozzle of the brushis thus entirely obviated, our brush supplying when in use a uniform,even spray entirely devoid of lumps of paint or the like which might marthe work-being done. rlhe air-outlet from the airchamber of the brushmay be regulated by the position of the member 12, as will be evident;`Vadjustment of' member 12 forwardly may be such as to completely closesaid outlet, which, however, as stated, is normally open, and adjustmentof said member rearwardly will increase the size of said outlet as maybe desired. By adjustment of stem or rod 7 relatively to disk 3, thetime of opening and closing of the paint-chamber of the brush may alsobe regulated, movement of the stem forwardly or rearwardly relative tothey casing or barrel determining the position of the forward end ofneedle 86 relatively to the mouth 25 of the paintchamber. Normally,however, as before stated, vthe parts of our brush are so adjusted thatcompressed air or other analogous .fluid flows from the brush not onlycontinuously while the paint-chamber is open, but also both in advanceof the opening andr subsequent to the closing of said paint-chamber, forthe purpose above described.

A. small screw or the like 41 is preferably threaded through casing 1and into one of the air-ports 22 of member 12 to hold member 12 frommoving rotarily relatively te the casing during the mounting of thenozzle 18 thereupon; and the nozzle' 18 is pref- Ato the ring, the ring42 will move wholly into the recess in said nozzle-extension, when thenozzle 18 may be rotarily moved relatively to the casing 1 and member 12for repair or replacement, or for adjustment of the member 12.

We are aware that changes in the form, construction, arrangement, andcombination of the several parts of our brush may be made'andsubstituted for thoseherein shown and described without departing fromthe nature or principle of our invention.

Having thus described our invention, what we claim and desire to secureby Letters Patent is:

1. AL brush of the class described comprising, in combination, a casing,an air-chamber within the casing having a normally open nozzle-outletand adapted for communication with a source of compressed yair supply, aspring-pressed valve normally closing communication between theairchamber and its source of supply, a paintchamber within the casinghaving a nozzleoutlet in proximity to the nozzle-outlet of theair-chamber, a spring-pressed disk mounted for slidable movement in thecasing, a needle attached to and movable with the disk and normallyclosing the outlet of the paint-chamber, and means for actuating thevalve and disk to open communication between' the air-chamber and itssource of supply and open the outlet of the paintchamber, saidv meansincluding a springpressed conoidal member mounted for slidable movementwithin the casing and adapted to engage at an end with the disk and. atits sloping .face directly with thev valve, and a depressible triggerpivoted upon the casing for actuating the conoidal member.

2. A brush of the class described comprising, in combination, a casing,an air-chamber within the casing having a normally open nozzle-outletand adapted for communication with a source of compressed air thepaint-chamber, and means for actuating the valve and disk to opencommunication between the air-chamber and its source of supply and openthe outlet of the paintchamber, said means including a stem on thevalve, a tubular extension on the disk surrounding the needle, aspring-pressed flanged conoidal member mounted for-slidable movementinthe casingand adapted to engage at an end with said extension and at itssloping face directly with said stem, and a trigger pivoted upon thecasing and havin a forked extension adapted to engage ghe iange of theconoidal member for actuating the same.

3. A brush of the class described comprising, in combination, a casing,an air-chamber Within the casing having a normally open nozzle-outletand adapted for communication with a source of compressed air supply, aspring-pressed valve normally closing communication between theairchamber and its source of supply, a stem on the valve, a.spring-pressed conoidal member mounted for slidable movement within thecasing and adapted, when actuated, to engage at its sloping facedirectly with said stem to unseat the valve to open communicationbetween the air-chamber vand its source of supply, and a trigger mountedupon the casing for actuating the conoidal member.

4. A brush of the class described comprising, in combination, a casing,an air-chamber within the casing having a normally open nozzle outletand adapted for communication with a. source of compressed air membermounted for slidable movement Within the casing and adapted, whenactuated, to engage at its sloping face directly with said stem tounseat the valve to open communicationbetween the air-chamber and itssource of supply, and a trigger pivoted upon the casing for slidablyactuating the conoidal member, the trigger having a forked extensionstra-ddling the Conoidal member and adapted for engagement with theflange thereof.

5. A brush oi the class described comprising, in combination, a casing,a. paint-chamber within the casing having a nozzle-outlet, aspring-pressed disk mounted igor slidahle movement in the casing, atubular extension on the disk disposed longitudinaliy within the casing,a needle-housing within the casing having a portion sleeved within saidextension, a needle normally closing the outlet momes of thepaint-chamber, the needleliaving attachment to the disk and projectinglongitudinally within the housing-and extenslon,

member and adapted for engagement with the flange thereof.

6. A brush of the class described comprising, in combination, a casing,a paintchamber'within the casing lhaving a nozzleoutlet, a needle foropening and closing said outlet, and means for adjusting the position ofthe needle relatively to the outlet, said means including a disk mountedfor slidable movement within the casing and provided with a threadedtransverse aperture, and a stem fixed on the needle and having athreaded portion disposed within said aperture for adjustable threadedengagement with the disk.

7. In a brush of the class described, the combination with a casing, anozle adapted to fit upon the casing, and means including a membermounted for movement within the casing and adapted for adjustablethreaded engagement with the nozzle4 for regulating the outlet thereof.

8. In a. brush of the class described, the combination with a casing, anozzle adapted to it upon the casing, and meansfor regulating the outletthereof, said means including a cylindrical member mounted for endwisemovement within the casing and adapted for adjustable threadedengagement at an end with the nozzle, and any extension projecting fromsaid member into the nozzle.

9. In a brush of the class described, the combination with a casing, of'a nozzle adapted to fit detachably upon the casing, means for regulatingthe outlet of the nozzle, said means including a cylindrical membermounted for endwise movement within the casing and adapted foradjust-able threaded engagement at an end with the nozzle, and anextension projecting from said member into the nozzle, and means fordetachably locking the casing to the nozzle RIDERE l). MILLER. l CHARLESJ. BREMSER.

